Kabushiki Kaisha Toyota Jidoshokki

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jikoshikki

Sadanori Suzuki

Shimpei Sakoda

Kazuyoshi Takada

Yukihiro Yamamoto

Shinji Ichikawa

Kenichi Nakata

Toru Nakamura

Tetsuhiro Ishikawa

Kiminori Ozaki

Hiroaki Asano

Takahiro Suzuki

Yasuhiro Koike

Tomoaki Asai

Hitoshi Shimadu

Kota Otoshi

Tadashi Kondo

Ryou Yamauchi

Yusuke Yamamoto

Norihisa Sakakibara

Takahiro Hayakawa

Tetsuya Furuta

Masao Miyake

Hiroo Ito

Tetsuya Furata

A power conversion device converts AC voltage into DC voltage. The power conversion device includes a transformer, a first capacitor, a primary circuit, a rectifying-smoothing circuit, and a controller. The primary circuit includes a bridge circuit having two arm switching elements, and is connected to a primary winding of the transformer via the first capacitor. The rectifying-smoothing circuit includes a secondary diode and an output capacitor. The primary circuit includes a buffer circuit having a buffer capacitor and a buffer switching element. The controller controls switching of switching elements.

Power conversion device

A power converter includes an alternating-current-side circuit, a direct-current-side inductor, an alternating-current-side inductor, a direct-current-side circuit, a controlling unit, a transformer, a direct-current-side capacitor, and an alternating-current-side capacitor. The alternating-current-side circuit includes an alternating-current-side buffer circuit and a bridge circuit, and is connected to an alternating-current-side winding of the transformer via the alternating-current-side capacitor. The direct-current-side circuit includes a direct-current-side buffer circuit and a rectification switching element, and is connected to a direct-current-side winding of the transformer via the direct-current-side capacitor. The controlling unit controls switching of the switching elements.

Power converter

Power supply equipment () is provided with an AC power supply () and a primary-side resonance coil (). Movable body equipment () is provided with a secondary-side resonance coil (), which receives power from the primary-side coil, a rectifier (), which rectifies the received power, a charger () to which the rectified power is supplied, and a secondary battery (), which is connected to the charger. A primary matching unit () is provided between the AC power supply () and the primary-side resonance coil (). A secondary matching unit () is provided between the secondary-side resonance coil () and the rectifier (). A control unit is provided to either the power supply equipment () or the movable body equipment (). The control unit controls a primary matching unit adjustment unit () and a secondary matching unit adjustment unit (). In order to efficiently transfer power from the primary side to the secondary side when charging the secondary battery, the control unit initially adjusts the secondary matching unit (). After adjusting the secondary matching unit (), the control unit adjusts the first matching unit ().

Resonance-type non-contact power supply system, and adjustment method for matching unit during charging of resonance-type non-contact power supply system

Power reception equipment () is provided with: a secondary side resonance coil () which receives power from a primary side resonance coil () of power supply equipment (); and a rectifier () which rectifies the received power. The power reception equipment is further provided with: a secondary matching unit () which is provided between the secondary side resonance coil () and the rectifier (); a charger () to which rectified electric power is supplied; a power storage device () which is connected to the charger; and a control unit () which adjusts the secondary matching unit when the power storage device is being charged. The control unit stores, as data on a storage device (), the relationship between the charge power from the power supply equipment during the power ascension phase and the matching status of the secondary matching unit () when charging. During the phase in which the power output from the supply equipment is reduced, the control unit adjusts, on the basis of the data stored in the storage device during the power ascension phase, the secondary matching unit () so as to reach a suitable status corresponding to the charge power.

Power reception equipment for resonance-type non-contact power supply system

A non-contact power transmission apparatus includes a high-frequency converting section, which converts input voltage to high-frequency voltage and outputs it, a primary coil, which receives high-frequency voltage from the high-frequency converting section, and a secondary coil, which receives electric power from the primary coil. The non-contact power transmission apparatus further includes a load to which the electric power received by the secondary coil is supplied, a rectifier located between the secondary coil and the load, and an output adjusting section, which supplies, as pulses, output voltage to the high-frequency converting section. The output adjusting section is configured to increase or reduce output to the load by adjusting a duty cycle of the pulse output.

Non-contact power transmission apparatus

A power-supply unit has an electric connection box operable to supply an electric power of a battery to loads and a power supply operable to control first voltage supplied from the battery and outputted through the electric connection box and supply second voltage into which the first voltage is controlled in the power supply to the loads through the electric connection box. The electric connection box includes an electric connection box side input terminal connectable to the battery and an electric connection box side output terminal connectable to the loads. The power supply includes a power supply side input terminal that is directly connected to the electric connection box side input terminal and a power supply side output terminal that is directly connected to the electric connection box side output terminal. The power supply is directly supported by and fixed to the electric connection box.

Power-supply unit and power supply

Movable body equipment is provided with: a secondary-side resonance coil, which receives power from a primary-side resonance coil of power supply equipment; a rectifier, which rectifies the power received by the secondary-side resonance coil; and a secondary battery, to which to which the power rectified by the rectifier is supplied. A resonance-type non-contact power supply system is provided with: state of charge detection units, which detect the state of charge of the secondary battery; and an impedance estimation unit, which estimates an impedance estimation value for the secondary battery on the basis of the state of charge of the secondary battery. When the absolute value of the difference between the impedance estimation value and the current impedance value of the secondary battery exceeds a threshold, a determination unit determines that a foreign body is present between the primary-side resonance coil and the secondary-side resonance coil.

Resonance-type non-contact power supply system

A power feeding system is provided, in which a detected value of reflected power at a power supply device in a power feeding installation is sent from the power feeding installation to a vehicle via a first communication device, the vehicle has an impedance matching device for adjusting an impedance at a resonance system that is constituted of a power transmission resonator, including a primary self-resonant coil and a primary coil in the power feeding installation, and a power receiving resonator, including a secondary self-resonant coil and a secondary coil in the vehicle, and the impedance matching device is controlled based on the detected value of the reflected power at the power supply device, which has been received from the power feeding installation.

Power feeding system and vehicle

A resonance type non-contact charging apparatus is disclosed. A charger of the apparatus receives the high frequency power from a secondary side resonance coil of the apparatus. A power ratio detecting section of the apparatus detects the ratio of the reflected power from a primary side resonance coil to the high frequency power source with respect to the output power from the high frequency power source to the primary side resonance coil. A stop control section of the apparatus stops the high frequency power source when the ratio detected by the power ratio detecting section becomes greater than or equal to a predetermined threshold value.

Resonance type non-contact charging apparatus

An electronic unit includes a double-sided substrate having an insulation substrate, a patterned first metal plate bonded on one side of the insulation substrate, and a patterned second metal plate bonded on the other side of the insulation substrate, and also includes a heat radiation member for releasing heat from the double-sided substrate. The heat radiation member is disposed adjacent to one of the first metal plate and the second metal plate generating a larger amount of heat than the other of the first metal plate and the second metal plate.

Electronic unit

A resonance type non-contact power supply system is provided that includes power supplying equipment and an electric vehicle. The power supply equipment includes an alternating-current power source and a primary-side resonance coil for receiving power from the alternating-current power source. The electric vehicle includes power receiving equipment and a vehicle height control device mounted on the electric vehicle. The power receiving equipment includes a secondary-side resonance coil that receives power from the primary-side resonance coil, a rectifier that rectifies the power received by the secondary-side resonance coil, and an electrical storage device, to which the power rectified by the rectifier is supplied. A resonance system that includes the primary-side resonance coil and the secondary-side resonance coil is configured such that impedance thereof is adjusted by the use of the vehicle height control device when the electrical storage device is charged.

Resonance type non-contact power supply system for vehicle and electric vehicle

A substrate connection structure includes a first substrate, a second substrate, a first connection terminal plate, a second connection terminal plate, and a fastening member. The first connection terminal plate extends away from the first substrate and includes a flat portion. The second connection terminal plate extends away from the second substrate and includes a flat portion. At least one of the flat portions includes a screw insertion portion. The fastening member fastens the first connection terminal plate and the second connection terminal plate through the screw insertion portion in a state in which the flat portions are in contact with each other.

Substrate connection structure

A non-contact power transmission apparatus having an AC power source and a resonance system is disclosed. The resonance system has a primary coil connected to the AC power source, a primary side resonance coil, a secondary side resonance coil, a secondary coil, and a load connected to the secondary coil. The primary side resonance coil is separated from the primary coil in an axial direction by a first distance, and the secondary coil is separated from the secondary side resonance coil in the axial direction by a second distance. At least one of the first distance and the second distance is adjusted to be a distance that is determined in advance in accordance with the impedance of the load so that the power transmission efficiency is maintained at a proper value.

A non-contact power transmission apparatus having a resonance system is disclosed. The resonance system includes a primary coil to which an alternating-current voltage from an alternating-current source is applied, a primary-side resonance coil, a secondary-side resonance coil, and a secondary coil to which a load is connected. The impedance of the primary coil is set such that the output impedance of the alternating-current source and the input impedance of the resonance system are matched to each other.

Non-contact power transmission apparatus and method for designing non-contact power transmission apparatus

A resonance type non-contact charging device includes a high frequency power source, a primary side resonant coil, a secondary side resonant coil, a charger, a secondary battery, and a stop control unit. The primary side resonant coil receives supply of high frequency electric power from the high frequency power source. The secondary side resonant coil is arranged apart from the primary side resonant coil in a non-contact manner. The secondary side resonant coil receives electric power from the primary side resonant coil through magnetic field resonance between the primary side resonant coil and the secondary side resonant coil. The charger receives supply of high frequency electric power from the secondary side resonant coil. The secondary battery is connected to the charger. The stop control unit stops the high frequency power source before stopping the charger when charging is to be stopped.

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Kariya, Japan

Sadanori Suzuki